/* Debias — debias.plutostudio.app
   Serif for claims, sans for interface, mono for measurement.
   Violet-biased neutrals; teal reserved semantically for "what is actually true". */

:root {
  --paper:      #FBFAFD;
  --paper-sunk: #F2EFF8;
  --ink:        #171320;
  --ink-soft:   #3B3450;
  --muted:      #6B6480;
  --rule:       #E0DAEC;
  --violet:     #6D4AE0;
  --violet-dim: #EDE7FC;
  --teal:       #16776A;
  --teal-dim:   #DFF0EC;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           Georgia, ui-serif, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;

  --col: 63ch;
  --wide: 74rem;
  --pad: clamp(1.25rem, 5vw, 2rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:      #12101A;
    --paper-sunk: #1B1826;
    --ink:        #EFECF7;
    --ink-soft:   #C6C0D8;
    --muted:      #918AA6;
    --rule:       #2C2740;
    --violet:     #A98CFF;
    --violet-dim: #241D3D;
    --teal:       #5FC9B5;
    --teal-dim:   #12302C;
  }
}

:root[data-theme="dark"] {
  --paper:      #12101A;
  --paper-sunk: #1B1826;
  --ink:        #EFECF7;
  --ink-soft:   #C6C0D8;
  --muted:      #918AA6;
  --rule:       #2C2740;
  --violet:     #A98CFF;
  --violet-dim: #241D3D;
  --teal:       #5FC9B5;
  --teal-dim:   #12302C;
}

:root[data-theme="light"] {
  --paper:      #FBFAFD;
  --paper-sunk: #F2EFF8;
  --ink:        #171320;
  --ink-soft:   #3B3450;
  --muted:      #6B6480;
  --rule:       #E0DAEC;
  --violet:     #6D4AE0;
  --violet-dim: #EDE7FC;
  --teal:       #16776A;
  --teal-dim:   #DFF0EC;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--col);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.wide {
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.wordmark span { color: var(--violet); }

.masthead .plat {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- hero ---------- */

.hero { padding-block: clamp(3rem, 9vw, 5.5rem) 2rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 1.5rem;
}

h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0 0 1.25rem;
}

.standfirst {
  margin: 0;
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  color: var(--ink-soft);
  text-wrap: pretty;
  max-width: 54ch;
}

/* ---------- the demo ---------- */

.demo {
  margin-block: clamp(2.5rem, 7vw, 4rem);
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper-sunk);
  overflow: hidden;
}

.demo-head {
  padding: 1.1rem var(--pad);
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.demo-body { padding: clamp(1.5rem, 4vw, 2.25rem) var(--pad); }

.demo-q {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 3.2vw, 1.6rem);
  line-height: 1.35;
  text-wrap: balance;
  margin: 0 0 1.75rem;
}

.choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.75rem;
}

.choice {
  font: inherit;
  text-align: left;
  padding: 1rem 1.15rem;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color 140ms ease, transform 140ms ease;
}

.choice:hover:not(:disabled) {
  border-color: var(--violet);
  transform: translateY(-1px);
}

.choice:disabled { cursor: default; }

.choice .key {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  display: block;
  margin-bottom: 0.3rem;
  letter-spacing: 0.08em;
}

.choice[data-state="picked"] {
  border-color: var(--violet);
  background: var(--violet-dim);
}

.choice[data-state="truth"] {
  border-color: var(--teal);
  background: var(--teal-dim);
}

.choice[data-state="truth"] .key { color: var(--teal); }

.reveal {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.reveal[hidden] { display: none; }

.verdict {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.85rem;
}

.reveal p {
  margin: 0;
  color: var(--ink-soft);
  text-wrap: pretty;
}

.reveal p + p { margin-top: 0.85rem; }

.named {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink);
}

/* ---------- sections ---------- */

section { padding-block: clamp(2.5rem, 7vw, 4rem); }

h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 4vw, 2.15rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0 0 1rem;
}

.sect-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

p { text-wrap: pretty; margin: 0; }
p + p { margin-top: 1rem; }

/* ---------- features ---------- */

.features {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  margin-top: 2rem;
}

.feature {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1.5rem;
  align-items: start;
}

.metric {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  color: var(--violet);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.metric small {
  display: block;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.4rem;
}

.feature h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
}

.feature p { color: var(--ink-soft); font-size: 0.97rem; }

@media (max-width: 34rem) {
  .feature { grid-template-columns: 1fr; gap: 0.6rem; }
}

/* ---------- codex quadrants ---------- */

.codex {
  background: var(--paper-sunk);
  border-block: 1px solid var(--rule);
}

.quadrants {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: 2rem;
}

.quad {
  background: var(--paper);
  padding: 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quad-n {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.quad h3 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 0;
}

.quad p { font-size: 0.9rem; color: var(--muted); }

/* ---------- audience ---------- */

.who {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.who li {
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1rem;
  align-items: baseline;
}

.who b {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--violet);
  font-weight: 400;
}

.who span { color: var(--ink-soft); font-size: 0.97rem; }

@media (max-width: 34rem) {
  .who li { grid-template-columns: 1fr; gap: 0.2rem; }
}

/* ---------- cta ---------- */

.cta { padding-block: clamp(3rem, 8vw, 5rem); text-align: center; }

.cta p { color: var(--muted); margin-bottom: 2rem; }

.install {
  display: inline-block;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.95rem 2rem;
  background: var(--violet);
  color: var(--paper);
  text-decoration: none;
  border-radius: 3px;
  transition: opacity 140ms ease, transform 140ms ease;
}

.install:hover { opacity: 0.9; transform: translateY(-1px); }

.free {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 1.25rem;
}

/* ---------- legal / support pages ---------- */

.doc { padding-block: clamp(2.5rem, 7vw, 4rem); }

.doc h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  margin-bottom: 0.75rem;
}

.doc .updated {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

.doc h2 {
  font-size: clamp(1.15rem, 2.8vw, 1.4rem);
  margin-top: 2.5rem;
  margin-bottom: 0.6rem;
}

.doc h3 {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 1.75rem 0 0.5rem;
}

.doc p, .doc li { color: var(--ink-soft); }

.doc ul { padding-left: 1.2rem; margin: 0.75rem 0 0; }
.doc li { margin-bottom: 0.5rem; }

.doc a { color: var(--violet); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--rule);
  padding-block: 2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}